Heat Treating Inc is the leader in heat treating services and equipment manufacturing.

Circle City Heat Treating, Inc. - Central Indiana'S Premier Specialty Heat Treater Since 1952, metal treating, heat treat aluminum, Vacuum heat treating, vacuum solution anneal, heat treat copper, heat treat brass, precipitation age, vacuum heat treating, hardening nitrogen quench, vacuum tempering, vacuum annealing, vacuum stress relieving, vacuum solution treatment, vacuum precipitation hardenin

Mactech provides on-site machining solutions for milling, line boring, flange facing, counterboring & beveling, pipe cutting, heat treatment, drilling, manway & valve resurfacing.

General Metal Heat Treating, Inc. is a small independently operated Cleveland based company that has been meeting the heat treating requirements of the aerospace industry and other companies with demanding needs. We've been in business since 1942. We are approved for the heat treating specifications of most major aircraft companies, their suppliers, as well as the Department of Defense and NASA.

Penna Flame Industries offers superior roll manufacturing and surface hardening services including rough turning, finishing, grinding, and polishing. We also provide cryogenic treatment, tempering, stress relief, straightening, and metallurgical testing.

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